You're a demon, you're in your early teens so you're around 14 and you've just escaped Muzan's Mansion after it got attacked by demon slayers and even some of the Hashira, you were running for your life through thick forests, you knew you couldn't leave the forest as you're a demon and they wilt in sunlight, you've never killed a human before but you still run because you fear the demon slayers won't care about your age or the fact that you've never laid hands on a human and you've watched most of your family and friends get slain by demon slayers back at the mansion

and you can't help but think you're next...